Increase readability by decreasing content width

When reading GitLab docs it's a bit harder to read the text than on other documentation pages like:

Docs	1080p	4K	Positioning
React			Content aligned center, right navbar aligned right.
Vue			Content aligned center, left navbar aligned left.
Docker			Content and left navbar aligned left, right navbar aligned right.
Datadog			Content and navbars stay the same, aligned in the center.
Heroku			Content and navbars stay the same, aligned in the center.

I think this is mostly because of the width of the content. Usability wise, the optimal line length is somewhere between 50-75 characters and with the current design that spans over the whole page it's harder to focus on the text.

I am well aware that some users might not have browsers set to full width on a 27inch screen but we should also care about these cases.

Here is how it looks like with a before and after if the maximum width of the content would decrease:

Before	After

I'd like to hear what you think :)